New Book Claims The Obamas and The Clintons Do Not Get Along

9:42 AM EDT, June 24, 2014

They may look friendly, but do the Obamas and Clintons really despise each other?

In his new book, Blood Feud: The Clintons vs. The Obamas, bestselling author Edward Klein said neither side has forgotten the bitter 2008 presidential primary contest between the president and Hillary.

Klein said, "There was bad blood between them from the start and it has never been repaired."

He quotes Bill Clinton as saying, "I hate that man Obama more than any man I’ve ever met, more than any man who ever lived."

Klein said, "That quote comes from not one, not two, but three separate sources, all of whom have heard Bill Clinton say that.”

There’s more. Klein claims the Obama's marriage is not as perfect as it seems. That they even sleep in separate beds.

INSIDE EDITION’s Les Trent asked Klein, “You say the Obama’s sleep in separate bedrooms. What proof do you have of that?”

He replied, “From people who actually work in the White House and in the residence whom I’ve interviewed.”

In the book, Klein also raises issues about Hillary’s health. The author claims the 66-year-old former Secretary of State has undisclosed heart problems, suffers from blood clots that cause fainting spells, and is at risk for a serious stroke.

He said, “The Clintons have tried to portray Hillary as very healthy and totally recovered from her fainting spells but in fact, I think they're covering up the fact she does have a serious problem.”

Klein also wrote that behind closed doors Michelle Obama has dubbed Hillary the "Hildebeest."

But, Klein said, like Hillary, Michelle Obama has political ambitions that go beyond being first lady, saying, “Michelle has been thinking about setting up a committee to explore whether she should run for Senator of Illinois.”

But Michelle dismissed that possibility on Monday at the Working Families Summit with Robin Roberts.

Roberts asked, “There are many people wondering what's your next act. Will it be political?”

Michelle Obama replied, “No. It will not be political. It definitely will not be.”

Klein is the former editor of the New York Times Sunday magazine, but despite that prestigious background, a previous book about Hillary came under heavy fire in the past, with the Boston Globe calling him "an author devoid of credibility."

No word from the White House on the book, but a spokesman for Hillary is blasting Klein, telling INSIDE EDITION, "If at first you don't succeed, lie, lie again."

Trent asked Klein, “You know you're going to get criticism of this book from people on the left who say this sounds like a right wing hatchet job.”

Klein said, “Well, first of all, I'm not a right winger. I consider myself an independent and I let the chips fall where they may.”